Jawapan

2015-07-06T17:54:07+08:00
AT = 23 - 17 cm
     = 6 cm

$\begin{align} \ tangen\ x &= \frac{ BT}{AT}\\&= \frac{ 14}{6}\\&=\frac{ 7 }{ 3}  \\ x&=invers\ tan( \frac{7}{3} ) \\ &=66.8\end{align}

y = 90 - 66.8
   = 23,2